ought to differentiate
Regular verb: differentiate - differentiated- differentiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to differentiate
you ought to differentiate
she ought to differentiate
we ought to differentiate
you ought to differentiate
they ought to differentiate 	I ought to be differentiating
you ought to be differentiating
she ought to be differentiating
we ought to be differentiating
you ought to be differentiating
they ought to be differentiating	I ought to have differentiated
you ought to have differentiated
she ought to have differentiated
we ought to have differentiated
you ought to have differentiated
they ought to have differentiated	I ought to have been differentiating
you ought to have been differentiating
she ought to have been differentiating
we ought to have been differentiating
you ought to have been differentiating
they ought to have been differentiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to differentiate
you ought not to differentiate
she ought not to differentiate
we ought not to differentiate
you ought not to differentiate
they ought not to differentiate 	I ought not to differentiating
you ought not to differentiating
she ought not to differentiating
we ought not to differentiating
you ought not to differentiating
they ought not to differentiating	I ought not to have differentiated
you ought not to have differentiated
she ought not to have differentiated
we ought not to have differentiated
you ought not to have differentiated
they ought not to have differentiated	I ought not to have been differentiating
you ought not to have been differentiating
she ought not to have been differentiating
we ought not to have been differentiating
you ought not to have been differentiating
they ought not to have been differentiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I differentiate?
ought to you differentiate?
ought to she differentiate?
ought to we differentiate?
ought to you differentiate?
ought to they differentiate? 	ought to I be differentiating?
ought to you be differentiating?
ought to she be differentiating?
ought to we be differentiating?
ought to you be differentiating?
ought to they be differentiating? 	ought to I have differentiated?
ought to you have differentiated?
ought to she have differentiated?
ought to we have differentiated?
ought to you have differentiated?
ought to they have differentiated? 	ought to I have been differentiating?
ought to you have been differentiating?
ought to she have been differentiating?
ought to we have been differentiating?
ought to you have been differentiating?
ought to they have been differentiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to differentiate?
ought you not to differentiate?
ought she not to differentiate?
ought we not to differentiate?
ought you not to differentiate?
ought they not to differentiate? 	ought I not to be differentiating?
ought you not to be differentiating?
ought she not to be differentiating?
ought we not to be differentiating?
ought you not to be differentiating?
ought they not to be differentiating? 	ought I not to have differentiated?
ought you not to have differentiated?
ought she not to have differentiated?
ought we not to have differentiated?
ought you not to have differentiated?
ought they not to have differentiated? 	ought I not to have been differentiating?
ought you not to have been differentiating?
ought she not to have been differentiating?
ought we not to have been differentiating?
ought you not to have been differentiating?
ought they not to have been differentiating?